package com.henry.base.sort;

public class Test {
    public static void main(String[] args) {
        int a = 31;
        a &= ~(1 << 4);
        System.out.println(a);
    }

    @org.junit.Test
    public void fun1(){
        System.out.println(0x0c);

//        System.out.println(Integer.bitCount(12));;



        for (int i = 0; i < 20; i++) {
            System.out.println(Integer.bitCount(i));;
        }
    }
}
